Question

stress is defined as (a) force per unit area , (b) resistance per ubit area , (c) force per unit area (d) resistance per unit length​

Answer 1

Stress is defined as force per unit area (option-a).

• Stress is defined as the force applied to an object per unit area of that object.
• Stress arises in a body due when force is externally applied to it.
• This can also cause changes in the structure and shape of the body.

• Stress experienced by a body can be calculated by applying the following formula:

                      stress = Force / Area

                           σ    = F / A

• SI unit = Newton/meter² i.e. N/m².
• The two types of stress are as follows:

1. shearing stress - is also called tangential stress.
2. normal stress